Speed-indicator.



W. E. FARR.

SPEED INDICATOR.

APPLICATION FILED SBPT.9, 1910.

1,004,544, v Patented Sept. 26, 1911.

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W.- E. FARR.

SPEED INDICATOR.

APPLICATION FILED SEPT. 9, 1910.

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Elihu W. FARR,

SPEED INDICATOR.

APPLICATION FILED $31 19. 1910.

Patented Sept. 26, 1911;

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lmowwtoz Parr WALTER E. FARR, OF SPRINGFIELD, MISSOURI.

SPEED-INDICATOR.

Specification of Letters Patent.

Patented Sept. 26, 1911.

Application filed September 9, 1910. Serial No. 581,222. I

To all whom 'it may concern:

Be it known that I, WALTER E. PAnn, a citizen of the United States,residing at Springfield, in the county of Greene, State of Missouri,have invented certain new and useful. Improvements in Speed-Indicators;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable-others skilled in theart to which it appertains to make and use the same.

This invention relates to speed indicators such as are used to indicatethe speed of antomobiles and other like vehicles.

The principal object of the invention is to provide an improved andsimplified form of such indicator arranged not only to give the speed atwhich the vehicle isbeing run at any given time but also to indicate andregister the maximum speed obtained during any run.

Another object of the invention is to provide an improved form ofgovernor mechanism especially adapted for this purpose.

A third object of the invention is to provide an improved registeringmechanism to be operated in connection with said governor.

With the above and other objects in View the invent-ion consists ingeneral of a speed indicator having an improved governor mechanism andan improved indicating mechanism.

The invention further consists in certain novel details of constructionand combinations of parts hereinafter fully described, illustrated inthe accompanying drawings, and specifically set forth in the claims.

In the accompanying drawings, like characters of reference indicate likeparts in the several views, and :Figure 1 is a front view of theexterior of the device. Fig. 2 is a similar view with the front of thecasing or dial removed. Fig. 3 is a section on the line 3-3 of Fig. 2.Fig. 4 is a section on the line 4-4. of Fig. 2. Fig. 5 is a section onthe line 5-5 of Flg. 4. Fig. 6 is a view showing the application of thedevice to an automobile.

This device is preferably mounted in a cylindrical casing 10 the frontof whichis formed by a. dial 11 carried in a bezel 12 connected to thecasing at one side by a suitable hinge 13 and provided on its free edgewith a lock 14 the construction of which is not deemed necessary here tobe shown, it being merely essential that the lockshall be of suchcharacter as to prevent access to the interior of the device byunauthorized persons. In the lower part of the casing is a boss 15wherethrough passes a shaft 16 which is adapted for connection to aflexible shaft 17, the latter being in turn connected to the hub of oneof the wheels of the vehicle in any suitable manner as by the gearing18.

()n the shaft 16 is a bevel gear 19 which meshes with a bevel gear 2Qcarried on a shaft 21 which extends transversely of the shaft 16. Thisbevel gear 20 is provided with a sleeve 22 which is splined to the shaft21 and this sleeve is held in a bearing 23, the bearing thus supportingthe shaft 21 at this point while permitting it to move longitudinallyand to rotate. At 24 is a bearing -for the shaft 21 which permits saidshaft to rotate or to slide in the bearing. The gear 20 is in suchPOSltlOIl thflt. it bears against one side of the bearing 23 and on theother end of the sleeve 22 is fixed a-disk 25, the

arrangement of the parts being such that the bearing is held between thegear 20 and disk 25. thus preventing the movement of the sleevelongitudinally of said bearing. Fixed on the shaft 21 adjacent thebearing 24 is a second disk 26 and to each of the disks 25 and 26 arepivoted a series of governor arms 27 which are arranged to swing inplanes radial to the axis of theshaft 21. These arms are connected inpairs by means of links 28 each end of each link being pivoted to arespective arm. Fixed on these links 28 are governor weights 29.operation of this portion of the device it will be seen that when theshaft 16 is rotated by the action of the shaft 17 the shaft 21 willlikewise be rotated. This will cause the governor balls to move out inthe manner common to such devices and by the provision of the peculiarlimp connection between the arms 27 this movement is accomplished in avery regular and easy manner. As the balls 29 move out under theinfluence of centrifugal force the disk 26 will be drawn toward. thedisk 25 and the shaft 21 moved through theslecve 23. Extending throughthe center of the dial 11 is a shaft 30 surrounding which is a sleeve 31carrying a circular ratchet 82. Secured at one end to the sleeve 31 is aspring the other end of which is secured to the front of the casing Inthe eas 14 which meshes with a segmental gear 39 car- 42 which isconnected by a ball and socket ried on one arm of' the lever 40 which ispivoted. to the casing and which has a second arm41 projecting in adirection opposite to the arm carrying. the gear 39. Pivoted to the endof the arm 4:1 is a link joint with one arm of a lever 43. The other armof. the lever 43 has a bearing l4 connected thereto by a ball and socketjoint, said bearing being arranged for the reception of the end oftheshaft 21.

At 45' is a standard which extends from the casing and to the end ofthis standard is pivoted a lever 46 having one end of a spring 47connected thereto, the other end of said spring being connected to thearm 41 of the lever 40. At the end, of the lever 46 opposite said springthere is provided a fork 4E8 .which straddles a screw 49 having a. thumbnut 50 thereon.- By means of this thumb nut the lever 46 maybe moved tovarying angular relation with the standard 45 and the spring 4C7 be thusgiven varying degrees of tension. At 51 is'a feed tube for oil or otherlubricant and'this feed tube'is protube will be led to the pointsrequiring lubrication.

On the end of the shaft 30 is a pointer 5 and on the end of the sleeve31 is a similar pointer 54-. In the operation of this portion of thedevice when the shaft 21 is moved longitudinally by the actionof thegovernor the lever will be moved around its pivot and will in turn movethe lever 40 againstthe resistance of the spring 47. This will cause thesegmental gear 39 to rotate the gear 38 and consequently actuate theshaft 30. As the shaft 30 rotates the arm 37 engages the pin 36 androt-ates the ratchet 32 thus carrying the sleeve 31 "around with theshaft in one direction. Whenever the speed slacks off the arm 37 movesbackward away from the pin 36 as the latter is held by the ratchet andpawl from said backward movement. N ow the rotation ,of the sleeve 31carries with it the pointer 54 so that this pointer is carried around tothe full extent to which the pointer 53 is moved and is left in thatposition when the pointer 53 moves backward. The pointer 5st will thusindicate the maximum speed attained while the pointer 53 will indicatethe speed at which the automobile happens to be running at any giventime. Upon arriving at the garage or other point of control the casingmay be opened and the pawl released to allow the pointer 5stto resumeits position at Zero.

Therehas thus been provided a simple and efiicient device of the kinddescribed and for the purpose specifiech It is obvious that minorchanges may be made in the form and construction of this inventionwithout departing-from the material principles thereof. It is nottherefore desired to. confine the inventionto the exact form hereinshown and described, but it IS wished to include all such'as properlycome within the scope of the appended claims.

Having thus described the invention, whatis claimed as new, is

1. In a device of the kind described, 'a governor mechanism including alongitudinally movable shaft, a lever pivoted intermediate its ends andhaving one end connected to the shaft, a link having one end connectedto the free end of the lever, a

second lever having one arm connected to the free end of said link andthe other arm provided .with a segmental ear, a spring connected to thefirst arm 0 the last mentioned lever, meansto adjust the tension of saidspring, a dial, a shaft passing.

through said dial, a gear on the last mentioned shaft meshing with thesegmental gear, a sleeve on the last mentioned shaft, a ratchet on saidsleeve, a pawl engaging said ratchet, a spring connected to said sleeveand constantly urging said sleeve to rotate, a pin projecting from theratchet, an arm'on the last mentioned shaft engaging said pin as theshaft is rotated to move the sleeve against the spring, and hands onsaid sleeve and last mentioned shaft traveling over said dial.

2. A speed'indicator including a dial, a shaft passing through saiddial, a gear on said shaft, a sleeve on said shaft, a ratchet on saidsleeve, a pawl engaging saidratchet,

a spring connected to said sleeve to constantly urge said sleeve torotate, a pin projecting from the ratchet, an arm on the shaft engagingsaid pin as the shaft is rotated .to movethe sleeve against the spring,hands on said sleeve and shaft traveling over said dial, andcentrifugally controlled means I connected to the gear for actuating thesaid hands.

A, speed indicator including a dial, a

said dial, actuating mechanism for the hands including a longitudinallymovable shaft, and means connecting the first mentioned shaft and thelongitudinally movable shaft for actuating the former upon movement ofthe latter. I

4. In a device of the kind described, a governor mechanism including alongitudinally movable shaft, a lever pivoted intermediate its ends andhaving one end connected to the shaft, a link having one end connectedto the free end of the lever, a second lever having one arm connected tothe free end of said link and the other arm provided with a segmentalgear, a spring connected to the first arm of the last mentioned lever,means to adjust the tension of said spring, a dial, hands movable overthe face of said dial, and means connecting the hands and the segmentalgear for moving said hands in the same direction upon the movement ofthe said shaft.

In testimony whereof, I afiix my signature, in presence of twowitnesses.

WALTER E, FARR. Witnesses:

M. S. BRAKMAN, R. G. LANGSTON.

